The quality of offset printing[printing?:printing cutting finishing solution] is very good.
Flexo print[print?:printing image graphic cutting solution] quality can not meet the requirements of high-grade corrugated carton[carton?:carton box sample cutting machine] box. First, it is used by the corrugated water resulting in the printing finished gloss differential; Second, the number of screen lines is generally 30 ~ 65LPI, no more than 150LPI, lower than offset printing; Third, the dot gain is more serious and difficult to grasp (such as 5O% dot dot gain at 30% ~ 40%).
The offset printing technology is relatively mature in China, but also the advantages of printing large areas of printing. Therefore, high-quality corrugated offset printing is normal. First, the offset printing using the PS version of the high resolution, can print a very fine pattern can also be used, such as surface finishing work, so currently for sale are the vast majority of high-end offset printing boxes; Secondly, corrugated offset line screens up to 150 ~ 200LPI; third, offset much lighter than in dot gain, dot gain at 50% 15% ~ 2O%; fourth, corrugated offset printing can reproduce the network range, 2% ~ 98% or even 1% to 99% (the network can reproduce the range of 3 ~ 95%).
Corrugated printing uniform, free from corrugated high and low impact, so the print quality is good. The screen lines can reach 150LPI, 50% dot gain 15% lower than the traditional 25%, but a continuous tone image, copy the range of tone only 8% to 85%; gravure than strong, cable to achieve 300LPI, reflects the gravure ink full, three-dimensional sense, the advantages of high overlay accuracy, even more than offset gravure effect.
